Improvement in button-hole cutters



l1cm-im G. Pow-LLL.

Improvement in Button-Hole Cuers.

Patented May 9,1871.

ittici %iaiiz5 @sind @da Letters Patent No. 114,598, dated May 9, 1871.

IMPROVEMENT IN BUTTON-HOLE CUTTERS.

The Schedule referred to in vthese Letters Patent and mking part of the lame.

1, JOHN c. POWELL, 'of the city of Phiiaieipha and State of Pennsylvania, have invented certain Improvements in Button-Hole Gutters, of which .the following is a speeilication.

The nature of my invention relates to a cutter-blade corrugated for the purpose of increasing its strength and to gi've practicablity to hardening very thin blades, which, when made fiat, are very liable to warp.'

The invention also'consists in the combination of a sliding gauge with the said blade, so constructed and arranged in relation thereto as to make oneor vmore of the corrugations., serve tovgnide the former in its adjustment, as hereinafter described.

IoA enable others skilled in the art to which my invention appertains to make and use my improved cutter, I will now give a full description thereof.

In the accompanying drawing, which makes a part of this speciiication Figure 1 is a face view of the improved cutter, hav` ing corrugations a. Y

Figure 2 is a like view of the blade A, with a single corrngation, a.

Figure 3 is' a cross-section at the line x x of fig. 1.

' Figures i and 5 are edge views 'of the sliding gauge Figure 6 is av cross-,section of the blade A, when the turns are of angular form.

Like letters in all the gures indicate the same parts.

'but a single corrugation or curve, a.

In the cross-sectiomjg. 6, a modification is shown,

`the turns c being of angular shape instead of curved,

as-'s'hown in figs. 1, 2. and 3..

The blade a is provided with' a scale of figures, as shown iu ligs. 1 and 2, which show the dist-ance across at various points, to determine how far it has to be pushed through the cloth to out any required width of button holes. 'Ihescale may be placed at one edge of the blade, as shownin the drawing, or at any other convenient part of it.

B is a sliding gauge, shown in detail in figs. 4 and 5. .It is adjusted by the operator with its-forward edge to the figure ofthe scale which indicates the required width of the buttonhole to be cut.

- The gauge is provided with a projection, b, which slides in the middle groove of the corrugations, the `spring part e of the gauge keeping it in place as the gauge is moved longitudinally over the blade in its adjustment. 'y

The edges d d of the blade A may be brought to a cuttingfedge, or one lei'tsquare. In the latter case the point of the blade should be insertedin the cloth at the point where determined upon for one edge of the button-hole, the` square edge to follow through at said point, while the cutting-edge advances in the cloth to give the requisite width to the hole.

What I claim as my invention. and desire to secure by. Letters Patent, is-

Thevcorruguted blade A, constructedsubstantially as described, and in combination therewith the sliding gauge B, so constructed and arranged in relation t-o the corrugations that one or more' ot' the latter 'shall guide and hold it in relation toits adjustment, as above set forth.

In testimonythat the above is my invention Ihave hereunto set my hand and afxed my seall this 25th day of February, 1871.

` JOHN G. POWELL. [nl s.]

Witnesses:

THOMAS J BEWLEY, STEPHEN Usrrcx, 

